Science Weekly: Flying saucers and Prince Charles

This week, the team discusses the Ministry of Defence's Grand Challenge; Prince Charles' views on GM crops; the ExoMars rover; personalised medicine; and how a Muslim creationist has thrown down the gauntlet to Richard Dawkins

The pod is bursting with Guardian correspondents this week: green technology correspondent Alok Jha is joined by science correspondent James Randerson, religious affairs correspondent Riazat Butt and environment correspondent David Adam.